Can an SVR-2000 boot from a CD-Rom?

Discussion in 'TiVo Underground' started by RealSMoo, Jan 24, 2006.

  1. RealSMoo

    RealSMoo New Member

    5
    0
    Jan 24, 2006
    Hutto, TX
    I don't mean take the hard drive out and use a PC cdrom, I mean I want this box to boot from a cdrom by itself.

    Can it be done?

    In case you need it, here is some information from the serial bash shell:

    cat /proc/cpuinfo
    processor : 0
    cpu : IBM 403GCX
    clock : 54MHz
    revision : 20.1
    bogomips : 53.86
    machine : Teleworld Customer Device

    bash-2.02# cat /etc/fstab
    # Copyright (c) 2001 TiVo Inc.
    /dev/hda4 / ext2 ro 1 1
    /dev/hda9 /var ext2 rw 1 2
    /dev/hda8 swap swap defaults 0 0

    bash-2.02# cat /proc/meminfo
    total: used: free: shared: buffers: cached:
    Mem: 14274560 14061568 212992 68124672 933888 4984832
    Swap: 314564608 0 314564608
    MemTotal: 13940 kB
    MemFree: 208 kB
    MemShared: 66528 kB
    Buffers: 912 kB
    Cached: 4868 kB
    SwapTotal: 307192 kB
    SwapFree: 307192 kB

    bash-2.02# lspci
    bash: lspci: command not found

    bash-2.02# cat /proc/devices
    Character devices:
    1 mem
    2 pty
    3 ttyp
    4 ttyp
    5 cua
    78 mpegdecoder
    90 fpga
    97 fan
    99 i2c
    127 mixaud

    Block devices:
    1 ramdisk
    3 ide0

    bash-2.02# cat version
    Linux version 2.1.24-TiVo-2.5 (gcc version 2.8.1) #6 Wed Oct 8 12:06:23 MDT 2003

    bash-2.02# cat modules
    mixaud 5872 1
    pxmpegdecode 65356 0 (unused)
    therm 1228 0 (unused)
    fan 1312 0
    fpga7114 146668 5
    i2c 10432 0 [pxmpegdecode therm fpga7114]
    bash-2.02# ls
    1 113 124 57 fpga net
    100 114 125 67 interrupts self
    102 115 126 68 ioports slabinfo
    103 116 127 69 kcore stat
    104 117 128 96 kmsg swaps
    105 118 129 99 ksyms sys
    106 119 180 cmdline loadavg therm
    107 120 2 cpuinfo locks uptime
    110 121 3 devices meminfo version
    111 122 47 dma modules
    112 123 55 filesystems mounts

    bash-2.02# cat net
    cat: net: Invalid argument

    bash-2.02# cat ioports
    f4100000-f4100007 : serial(auto)
    ffb40000-ffb40007 : serial(auto)
    ffc00000-ffc00007 : serial(auto)

    bash-2.02# dmesg
    bash: dmesg: command not found

    bash-2.02# cat filesystems
    ext2
    nodev proc
    romfs

    bash-2.02# cat stat
    cpu 5918 0 4762 590405
    disk 4930 0 0 0
    disk_rio 2265 0 0 0
    disk_wio 2665 0 0 0
    disk_rblk 4536 0 0 0
    disk_wblk 5330 0 0 0
    page 12758 3136
    swap 1 0
    intr 784851 0 0 0 0 737 84 0 0 0 0 56 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 200044 359643 0 1657 197 40129 0 1 1 1598 0 0 0 0 0 0 0 0 0 0 0 478 0 64392 30061 0 0 0 0 99 0 64383 21290 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    ctxt 1027026
    btime 1138157483
    processes 185

    Normal touches 2257
    Realtime touches 403
    Normal ages 3028
    Realtime ages 1717
    Normal expires 7
    Realtime expires 11
    Realtime TLB saving throws 62

    bash-2.02# ls
    1 113 124 57 fpga net
    100 114 125 67 interrupts self
    102 115 126 68 ioports slabinfo
    103 116 127 69 kcore stat
    104 117 128 96 kmsg swaps
    105 118 129 99 ksyms sys
    106 119 186 cmdline loadavg therm
    107 120 2 cpuinfo locks uptime
    110 121 3 devices meminfo version
    111 122 47 dma modules
    112 123 55 filesystems mounts

    bash-2.02# cat therm
    30C

    bash-2.02# cat uptime
    6030.37 5923.41

    bash-2.02# cat dma

    bash-2.02# pwd
    /proc

    bash-2.02# cd /bin
    bash-2.02#

    bash-2.02# ls
    asicVersion date getprom mount sleep umount
    bash dd grep mv smartctl uname
    cat df gzip ntpdate sort vmstat
    chat driveid hdparm ping stty
    chmod du ln rm swapon
    cp expect mkdir rz sync
    cpio freeramdisk mkswap sh sz

    bash-2.02# ./getprom

    bash-2.02# driveid
    WD-WMAM9C458891

    bash-2.02# hdparm -i /dev/hda

    /dev/hda:
    Model=WDC WD800JB-00JJC0, FwRev=05.01C05, SerialNo=WD-WMAM9C458891
    Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
    RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=66
    BuffType=0(?), BuffSize=8192kB, MaxMultSect=16, MultSect=off
    DblWordIO=no, maxPIO=0(slow), DMA=yes, maxDMA=0(slow)
    CurCHS=16383/16/63, CurSects=-66060037, LBA=yes, LBAsects=156301488
    tDMA={min:120,rec:120}, DMA modes: mword0 mword1 *mword2
    IORDY=on/off, tPIO={min:120,w/IORDY:120}, PIO modes: mode3 mode4

    bash-2.02# cd /usr/sbin
    bash: cd: /usr/sbin: No such file or directory
    bash-2.02# cd /usr
    bash: cd: /usr: No such file or directory
    bash-2.02# cd /
    bash-2.02# ls
    BASH_ON devbin install proc tvbin
    CACHECARD_ON dist kernel prom tvlib
    CACHECARD_TEST etc lib ptvupgrade var
    bin etccombo lost+found sbin
    dev initrd mnt tmp

    bash-2.02# uname -r
    2.1.24-TiVo-2.5

    bash-2.02# uname -u
    uname: invalid option -- u
    Try `uname --help' for more information.

    bash-2.02# uname -w
    uname: invalid option -- w
    Try `uname --help' for more information.

    bash-2.02# uname --?
    uname: unrecognized option `--?'
    Try `uname --help' for more information.

    bash-2.02# uname --help
    Usage: uname [OPTION]...
    Print certain system information. With no OPTION, same as -s.

    -a, --all print all information
    -m, --machine print the machine (hardware) type
    -n, --nodename print the machine's network node hostname
    -r, --release print the operating system release
    -s, --sysname print the operating system name
    -p, --processor print the host processor type
    -v print the operating system version
    --help display this help and exit
    --version output version information and exit


    bash-2.02# uname -p
    unknown

    bash-2.02# uname -p
    Linux

    bash-2.02# uname -s
    ppc

    bash-2.02# uname -a
    Linux (none) 2.1.24-TiVo-2.5 #6 Wed Oct 8 12:06:23 MDT 2003 ppc unknown

    bash-2.02# ping 127.0.0.1
    PING 127.0.0.1 (127.0.0.1): 56 data bytes
    64 bytes from 127.0.0.1: icmp_seq=0 ttl=255 time=1.248 ms
    64 bytes from 127.0.0.1: icmp_seq=1 ttl=255 time=0.759 ms
    64 bytes from 127.0.0.1: icmp_seq=2 ttl=255 time=0.751 ms
    64 bytes from 127.0.0.1: icmp_seq=3 ttl=255 time=0.753 ms
    64 bytes from 127.0.0.1: icmp_seq=4 ttl=255 time=0.755 ms
    64 bytes from 127.0.0.1: icmp_seq=5 ttl=255 time=0.756 ms
    64 bytes from 127.0.0.1: icmp_seq=6 ttl=255 time=0.756 ms
    64 bytes from 127.0.0.1: icmp_seq=7 ttl=255 time=0.754 ms
    64 bytes from 127.0.0.1: icmp_seq=8 ttl=255 time=0.751 ms
     
  2. cheer

    cheer Registered Offender

    1,406
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    Nov 13, 2005
    Gurnee, IL
    Nope -- far as I know, no way to do that.
     
  3. classicsat

    classicsat Astute User

    17,877
    0
    Feb 18, 2004
    Ontario Canada.
    The question is does the firmware know how to boot from CD-ROM drive?
    (you do need something for the CD-ROM disc to go in, to interface with the IDE bus).

    The answer would be no, as the system is designed to boot from an HDD only, as there is no reason for a TiVo to boot from a CDROM.

    May I ask what is it you want to do?
     
  4. RealSMoo

    RealSMoo New Member

    5
    0
    Jan 24, 2006
    Hutto, TX
    I want to boot something like Knoppix to test system performance with changes I'm making to the motherboard...

    Does anyone know if there's a way to clone a CD to a hard drive?
     
  5. cheer

    cheer Registered Offender

    1,406
    0
    Nov 13, 2005
    Gurnee, IL
    Even if it would boot, you'd have to have a MIPS-version of Knoppix/whatever, with the appropriate stuff/drivers/etc. for Tivo's unique hardware. Not a trivial thing, I would guess.

    What do you mean by "clone a CD to a hard drive?"

    --chris
     
  6. RealSMoo

    RealSMoo New Member

    5
    0
    Jan 24, 2006
    Hutto, TX
    I have a PPC version of the software I'm wanting to use...

    By clone a CD to a hard drive, I mean make an exact duplicate of the CD on a hard drive, including boot tables, file system, etc.

    I'm thinking that if I can clone the CD to a hard drive, and boot from that hard drive, I can use that to run minimal tests...
     
  7. StanSimmons

    StanSimmons Senior Moment Member

    4,717
    0
    Jun 10, 2000
    Flower...
    Append "HANDCRAFT=TRUE RUNMYWORLD=FALSE" to the boot parameters.

    This will prevent the TiVo software from starting, allowing you to run your software from the HD.

    (Assuming you have done all the other hacks needed to get a bash prompt, etc.)
     
  8. RealSMoo

    RealSMoo New Member

    5
    0
    Jan 24, 2006
    Hutto, TX
    Thanks, but that doesn't answer my question.

    It would be much better for me to clone a CD to the hard drive and boot from that.
     
  9. cheer

    cheer Registered Offender

    1,406
    0
    Nov 13, 2005
    Gurnee, IL
    I don't think so...and again, would your CD be a PPC version of Linux with all the hardware support that the Tivo needs?

    But I am not aware of any way to "clone" a CD to an HD in the manner you describe. A CD's partition/filesystem setup is different than a hard drive's.
     
  10. StanSimmons

    StanSimmons Senior Moment Member

    4,717
    0
    Jun 10, 2000
    Flower...
  11. classicsat

    classicsat Astute User

    17,877
    0
    Feb 18, 2004
    Ontario Canada.
    The HDD has to be formatted in the certain wat TiVo drives are.

    You have to throw out any concept of a PC, or even a Mac, as a TiVo is far from it.

    The only ppc knoppix is built for Apple computers.
     
  12. RealSMoo

    RealSMoo New Member

    5
    0
    Jan 24, 2006
    Hutto, TX
    I'm pretty well versed in linux, so I know my way around partitions and filesystems.

    As you can see in my original post, I've documented the file systems and partition types and how they correlate to the system itself.

    I'm going to keep digging on this, not only for myself, but for others who may one day wonder about this.

    I'll post my findings here.


    Thanks for everyones posts. They're appreciated.
     

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